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  ??????????11gR2
GI ?????????,??????GI????????????????????? 
  ????????GI???????3???,ohasd??,??????,??????? 
  ??,ohasd??? 
  1. /etc/inittab??????  
  h1:35:respawn:/etc/init.d/init.ohasd run
>/dev/null 2>&1 </dev/null 
  ???,??????? 
  root 4865 1 0 Dec02 ? 00:01:01 /bin/sh /etc/init.d/init.ohasd
run 
  ??????????????,???? 
  +init.ohasd ????????? 
  + os????????? 
  + ??S* ohasd????, ??S96ohasd 
  + GI????????(crsctl enable crs) 
  ??,ohasd.bin ??????,????OLR????,??,??ohasd.bin??????,?????OLR??????????????OLR???$GRID_HOME/cdata/${HOSTNAME}.olr 
   
  2. ohasd.bin????????agents(orarootagent,
oraagent, cssdagnet ? cssdmonitor) ???????????????,?????agent??????,??????????$GRID_HOME/bin ???????????,??,?????????,??corruption.   
  ???,??????? 
  1. Mdnsd ??????(Multicast)???????????????????,??????????????????????????? 
  2. Gpnpd ????,??????????bootstrap ??,??????????????gpnp profile???,?????mdnsd??????,???????????,?????????????,??gpnp
profile (<gi_home>/gpnp/profiles/peer/profile.xml)?????????? 
  3. Gipcd ????,????????????????(cluster
interconnect)?????,???????gpnpd???,??,??????????,?????gpnpd ??????? 
  4. Ocssd.bin ?????????????gpnp profile?????????(Voting Disk),????gpnpd ??????????,?????????????,??ocssd.bin
??????,?????????? 
  + gpnp profile ?????????? 
  + gpnpd ??????? 
  + ??????asm disk ??????????? 
  + ??????????? 
  5. ??????????:ora.ctssd, ora.asm, ora.cluster_interconnect.haip, ora.crf, ora.crsd
?? 
  ??:????????????????ocssd.bin, gpnpd.bin ? gipcd.bin ????,??gpnpd.bin????,ocssd.bin ? gipcd.bin ?????????,?gpnpd.bin????????,ocssd.bin ? gipcd.bin ????????gpnp profile?????????? 
  ??,????????????,?????crsd????????? 
  1. Crsd?????????????OCR,????OCR????ASM?,???? 
  ASM??????,??OCR???ASM??????????OCR???????,???????????????? 
  2. Crsd ?????agents(orarootagent,
oraagent_<rdbms_owner>, oraagent_<gi_owner> )???agent????,??????????$GRID_HOME/bin ???????????,??,?????????,??corruption.  
   3. ???????? 
   ora.net1.network : ????,?????????????,scanvip, vip,
listener?????????????,??????????,vip, scanvip ?listener ??offline,?????????????? 
  ora.<scan_name>.vip:scan???vip??,?????3?? 
  ora.<node_name>.vip : ?????vip ?? 
  ora.<listener_name>.lsnr: ???????????????,?11gR2??,listener.ora???????,????????? 
  ora.LISTENER_SCAN<n>.lsnr: scan ????? 
  ora.<????>.dg: ASM ????????????????mount???,dismount???? 
  ora.<????>.db: ???????11gR2????????????,??????????rac ????????,??????????,???????“USR_ORA_INST_NAME@SERVERNAME(<node name> )”???????,??????????ASM???,???????????????????,??dependency?????????,??????????????????,???dependancy???????,??????(crsctl modify res ……)? 
  ora.<???>.svc:?????????11gR2 ??,?????????,???10gR2??,???????????,srv ?cs ????? 
  ora.cvu :?????11.2.0.2???,???????cluvfy??,???????????????? 
  ora.ons : ONS??,????????,????? 
   ??,?????GI??????????????????? 
  $GRID_HOME/log/<node_name>/ocssd <==
ocssd.bin ?? 
  $GRID_HOME/log/<node_name>/gpnpd <== gpnpd.bin ?? 
  $GRID_HOME/log/<node_name>/gipcd <== gipcd.bin ?? 
  $GRID_HOME/log/<node_name>/agent/crsd <== crsd.bin ?? 
  $GRID_HOME/log/<node_name>/agent/ohasd <== ohasd.bin
?? 
  $GRID_HOME/log/<node_name>/mdnsd <== mdnsd.bin ?? 
  $GRID_HOME/log/<node_name>/client <== ????GI ??(ocrdump, crsctl, ocrcheck, gpnptool??)??????????? 
  $GRID_HOME/log/<node_name>/ctssd <== ctssd.bin
?? 
  $GRID_HOME/log/<node_name>/crsd <== crsd.bin ?? 
  $GRID_HOME/log/<node_name>/cvu <== cluvfy ????????? 
  $GRID_HOME/bin/diagcollection.sh <== ????????????????? 
   ??,????????(/var/tmp/.oracle
? /tmp/.oracle),??????????????????ipc???,??,?????????????????????,???GI?????????????????????,??????????GI??????????????